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jplot
Class DataArray  

java.lang.Object
  jplot.LinePars
      jplot.DataArray

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public class DataArray

extends LinePars

The DataArray class is a special-purpose array class for use with the graphical plotting program JPlot. All the plotting attributes are defined in the base-class LinePars, here we set the actual data array, i.e. a vector of points (PlotPoints) defining X,Y.

Version:

24/08/99

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Field Summary
protected  double[]	lowestNonZeroValue
protected  double[]	maxValue
protected  double[]	minValue
protected  java.util.Vector	points

 

Fields inherited from class jplot.LinePars

additioner, blueInc, color, colorIndex, dashIndex, dashLength, dataModified, endColor, every, fillArea, fillColor, greenInc, HISTO, LINES, multiplier, name, penWidth, plotLine, redInc, showLegend, slideColor, startColor, STICKS, style, symbol, symbolSize, useSymbol

 

Constructor Summary

DataArray()           Default constructor, initializes the class with nothing.

DataArray(int n)           Constructor, allocates memory for the data points.

DataArray(int n, LinePars lp)           Constructor, allocates memory for the data points.

 

Method Summary
void	addPoint(double x, double y)           Adds the values of a plot-point pair (x,y).
void	addPoint(double x, double y, boolean liftPen)           Adds the values of a plot-point pair (x,y).
void	allocate(int n)           Allocation of memory for the data points.
java.util.Vector	getData()           Return the data vector
(package private)  double	getLowestNonZeroValue(int axis)           Returns the lowest, but non-zero value in the range.
(package private)  double	getMaxValue(int axis)           Returns the maximum value in the range.
(package private)  double	getMinValue(int axis)           Returns the minimum value in the range.
PlotPoint	getPoint(int i)           Returns the plot-point of the specified index.
(package private)  java.awt.BasicStroke	getStroke()           Returns the stroke used to plot these points.
(package private)  double	getX(int i)           Return a specific X-value.
(package private)  double	getY(int i)           Return a specific Y-value.
boolean	liftPen(int i)
void	setLiftPen(int i)           Defines that, for this plotpoint, the pen should lift.
(package private)  void	setLinePars(LinePars l)           Sets the drawing style parameters at once.
void	setPoint(int i, double x, double y)           Sets the values of a plot-point pair (x,y).
int	size()           Return the length of the data vector.
void	sort(boolean ascending)           Sorts the arrays in ascending or descending order.
void	updateMinMax(double x, double y)           Updates maximum and minimum values.

 

Methods inherited from class jplot.LinePars

copy, dataChanged, drawLegend, drawLine, drawSymbol, fill, fill, getAdditioner, getColor, getColorIndex, getDashIndex, getDashLength, getEndColor, getFillColor, getGraphStyle, getMultiplier, getName, getPenWidth, getPointFrequency, getSettings, getStartColor, getSymbol, getSymbolSize, nextColor, setAdditioner, setColor, setColor, setDashLength, setDashLength, setDataChanged, setDrawLegend, setDrawLine, setDrawSymbol, setFillColor, setGraphStyle, setMultiplier, setName, setPenWidth, setPointFrequency, setSlideColor, setSlideColor, setSymbol, setSymbolSize, slideColor

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

points

protected java.util.Vector points

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maxValue

protected double[] maxValue

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minValue

protected double[] minValue

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lowestNonZeroValue

protected double[] lowestNonZeroValue

Constructor Detail

DataArray

public DataArray()

Default constructor, initializes the class with nothing.

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DataArray

public DataArray(int n)

Constructor, allocates memory for the data points.

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DataArray

public DataArray(int n,
                 LinePars lp)

Constructor, allocates memory for the data points.

Method Detail

allocate

public void allocate(int n)

Allocation of memory for the data points.

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updateMinMax

public void updateMinMax(double x,
                         double y)

Updates maximum and minimum values.

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addPoint

public void addPoint(double x,
                     double y)

Adds the values of a plot-point pair (x,y). This point is added at the end of the array.

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addPoint

public void addPoint(double x,
                     double y,
                     boolean liftPen)

Adds the values of a plot-point pair (x,y). This point is added at the end of the array.

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setPoint

public void setPoint(int i,
                     double x,
                     double y)

Sets the values of a plot-point pair (x,y).

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getPoint

public PlotPoint getPoint(int i)

Returns the plot-point of the specified index.

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setLiftPen

public void setLiftPen(int i)

Defines that, for this plotpoint, the pen should lift. This allows to draw discontinuous graphs.

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liftPen

public boolean liftPen(int i)

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size

public int size()

Return the length of the data vector.

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getData

public java.util.Vector getData()

Return the data vector

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getX

double getX(int i)

Return a specific X-value. This function returns POSINF (1e300) if index i falls beyond the valid range.

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getY

double getY(int i)

Return a specific Y-value. This function returns POSINF (1e300) if index i falls beyond the valid range.

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getMaxValue

double getMaxValue(int axis)

Returns the maximum value in the range. Careful, no error checking on the value of axis, which should be less than NAXES, defined in GraphPars.

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getMinValue

double getMinValue(int axis)

Returns the minimum value in the range. Careful, no error checking on the value of axis, which should be less than NAXES, defined in GraphPars.

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getLowestNonZeroValue

double getLowestNonZeroValue(int axis)

Returns the lowest, but non-zero value in the range. This is a a usefull 'minimum' value for e.g. logarithmic ranges.

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getStroke

java.awt.BasicStroke getStroke()

Returns the stroke used to plot these points. By default, a solid line of width 1 is assumed.

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setLinePars

void setLinePars(LinePars l)

Sets the drawing style parameters at once.

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sort

public void sort(boolean ascending)

Sorts the arrays in ascending or descending order.

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